<template>
    <el-container class="home-container">
        <!-- 头部 -->
        <el-header>
            <div>
                <img src="../assets/logo.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="loginout">退出</el-button>
        </el-header>
        <!-- 页面主体区域 -->
        <el-container>
            <!-- 侧边 -->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!-- 侧边菜单栏区域 -->
                <el-menu background-color="#333744" text-color="white" active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse"
                :collapse-transition="false" router :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + ''" v-for="item of menulist" :key="item.id">
                        <!-- 一级菜单模板区域************************************* -->
                        <template #title>
                            <!-- 图标 -->
                        <i :class="iconsObj[item.id]"></i>
                        <!-- 文本 -->
                        <span>{{ item.authName }}</span>
                        </template>
                        <!-- 一级菜单的图标,文本********************************** -->
                        <!-- 二级菜单 -->
                        <el-menu-item :index="'/'+Subitem.path" v-for="Subitem of item.children" :key="Subitem.id"
                        @click="saveNavState('/' + Subitem.path)">
                            <!-- 二级菜单的图标文本********8*************** -->
                            <template #title>
                            <!-- 图标 -->
                        <i class="el-icon-menu"></i>
                        <!-- 文本 -->
                        <span>{{ Subitem.authName }}</span>
                        <!-- 二级菜单的图标文本********8*************** -->
                        </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!-- 主体 -->
            <el-main>
                <!-- 路由占位符 -->
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>
<script>
// import { ElMessage } from 'element-plus'
export default {
  data () {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'el-icon-user-solid',
        103: 'el-icon-s-help',
        101: 'el-icon-goods',
        102: 'el-icon-tickets',
        145: 'el-icon-s-marketing'
      },
      //   是否折叠
      isCollapse: false,
      //   被激活的链接地址
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    loginout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有菜单
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error('数据获取失败')
      this.menulist = res.data
      // console.log(res)
    },
    // 点击按钮切换菜单的折叠与展开
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      // 保存连接的激活状态
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.el-header {
    background-color: #373d41;
    height: 120px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    font-size: 20px;
    padding-left: 0;

    >div {
        display: flex;
        align-items: center;

        span {
            margin-left: 15px;
        }
    }

    img {
        width: 120px;
        height: 120px;
    }
}

.el-aside {
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}

.el-main {
    background-color: #EAEDF1;
}

.home-container {
    height: 100%;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer; //小手
}
</style>
